<?php slot('title', __('Unsuscribe posts notifications')) ?>
<?php slot('main_title', __('Unsuscribe posts notifications')) ?>

<p>
  <?php echo __('Your subscription to the topic %post% has been successfully deleted.', array(
    '%post%' => '<strong>&laquo; '. $registration->getPost()->getTitle() .' &raquo;</strong>'
  )) ?>
</p>